Three people have died and nine others were injured in Milan, Italy when a residential building partially collapsed in an explosion possibly caused by a gas leak, ANSA reported on Sunday.

Two sisters aged 7 and 11 years suffered severe burns and were taken to hospital. Their mother was among the victims. Nine people were injured, including the girls’ farther, according to the Italian news agency. 

The incident took place on Sunday morning when many of the inhabitants of the building were still inside it. 

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